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CSI-Thermal/Solar Water Heating

Skip Navigation LinksPUC > Energy > California Solar Initiative > CSI-Thermal/Solar Water Heating > CSI-Thermal Program News

CSI-Thermal/Solar Water Heating Program News

The CSI-Thermal program provides rebates to utility customers who install solar thermal systems to replace water-heating systems powered by electricity or natural gas.

  • On October 1, 2015, the Commission approved Decision 15-10-004, modifying the CSI Thermal program to expand the eligibility requirements for single-family low income customers.
  • On January 29, 2015, the CPUC approved Decision 15-01-035, which increased incentive rates for the gas-displacing program, revised sub-program budgets, and established project incentive caps for multifamily /commercial and solar pool heating projects.
  • On February 1, 2014, the CPUC issued a legislative report, the Review of the Incentive Levels of the CSI-Thermal Program, pursuant to AB 2249 (Buchanan, 2012). Transmittal Letter
  • On August 15, 2013, the CPUC approves Decision 13-08-004 incentivizing solar swimming pool heating (except for single family residences).
  • Summary of 2012 Marketing and Outreach Campaign for Solar Water Heating
  • On February 28, 2013, the CPUC approves Decision 13-02-018 incentivizing new technologies
  • On August 2, 2012: CPUC approves D.12-08-008, modifying incentives for CSI-Thermal
  • CSI-Thermal Program issues new Program Handbook
  • CSI-Thermal Q1 2012 Program Status Report
  • November 10, 2011: Decision 11-11-004 allows IAPMO to certify CSI-Thermal products
  • November 10, 2011: Decision 11-11-005 allows rebates to CSI-Thermal installations that displace propane
  • October 6, 2011: Decision 11-10-015 launches CSI-Thermal Low Income program
  • October 6, 2011: CPUC Creates Low Income Solar Water Heating Program
  • On August 12, 2011, the CSI Thermal program administrators filed the Quarterly Progress Report for Q2 2011, in compliance with CPUC Decision 10-01-022.  The report covers the program budget, eligibility requirements, incentive structure, program expenditures, and market facilitation activities.
  • On August 3, 2011, PG&E, SCE, SoCal Gas, and CCSE filed advice letters (see SoCalGas’s Advice Letter 4266) to modify the CSI Thermal Handbook.  Here is a version of the proposed Handbook showing proposed revisions.  As noted in the advice letters, protests are due on August 23, 2011.
  • On August 3, 2011, the CPUC hosted a CSI Thermal program statewide market facilitation workshop.  Presentations were made by the four program administrators and by Fraser Communications, the consultant charged with developing the marketing plan.
  • On May 11, 2011, the CSI-Thermal Program Administrators issued the CSI-Thermal Quarterly Progress report covering Q4 2010 and Q1 2011.
  • On April 15, 2011, the CPUC released Itron's Final Evaluation Report of the San Diego Solar Water Heating Pilot Program, which was conducted from 2007 to 2009.
  • On Wednesday, February 23, 2011, the CPUC Energy Division held a public workshop to consider the inclusion of non-water heating thermal technologies and process heat in the CSI-Thermal Program
  • On Monday, February 28, 2011, the CPUC approved a joint Advice Letter (filed by the CSI-Thermal Program Administrators on January 14, 2011), making several changes to the CSI-Thermal Handbook.  The changes include:  1) an allowance for tank substitution in single-family applications:  2) a a requirement for a certificate of meter calibration for systems larger than 250 kWth:  3) clarification of methods for estimating building loads: and 4) adjustment of the minimum metering requirements. 
  • On Friday, October 8th, the CSI-Thermal Program opened eligibility to multi-family and commercial customers.
  • On Thursday, September 30th, the CSI-Thermal Program Administrators filed via Advice Letter a Supplemental CSI Thermal Multi-family/Commercial Handbook in response to a Protest by CalSEIA of the Revised Handbook.
  • On Friday, September 3rd, the CSI-Thermal Program Administrators filed via Advice Letter the Revised CSI Thermal Mulit-family/Commercial Handbook in compliance with Resolution G-3449.
  • On Thursday, August 12th, the Commission approved Resolution G-3449, which directs the CSI-Thermal Program Administrators to re-file the Multi-family/Commercial Handbook with certain changes that address parties' protest.
  • On Friday, July 16th, Energy Division released Draft Resolution G-3449, which directs the CSI-Thermal Program Administrators to re-file the Mult-family/Commercial Handbook in a way that addresses parties' protests.
  • On Monday, June 28th, the CPUC Program Administrators filed their reply to protest of the Mulit-family/Commercial version of the CSI-Thermal Program Handbook.
  • On Monday, June 14th, the CPUC received protests to the Multi-family/Commercial version of the CSI-Thermal Program Handbook.  Replies to the protests were due on June 28.
  • On Monday, May 24th, the CSI-Thermal Program Administrators submitted to the CPUC the Multi-family/Commercial version of the CSI-Thermal Handbook via Advice Letter which incorporates into the existing handbook the rules and requirements for Multi-family and Commercial customers to participate in the program.  Protests to the Advice Letter are due no later than June 13.
  • On Thursday, April 29th, the CPUC approved the Single-Family Residential version of the  CSI-Thermal Program Handbook, which spells out the rules and requirements for participation in the program.
  • On Tuesday, March 30th, the CPUC held a public workshop to discuss the draft version of the the Multi-Family/Commercial portion of the CSI-Thermal Program Handbook.  Written comments on Multi-Family/Commercial portion of the Handbook are due no later than Wednesday, April 7th.  Comments should be sent to the service list for proceeding R.08-03-008.  The draft handbook can be downloaded by clicking here.  Portions of the handbook pertaining to the Multi-Family/Commercial portion of the program are highlighted in yellow.
  • On Monday, March 22nd, Pacific Gas and Electric Company filed Advice Letter 3102-G/3637-E with the Commission to Establish the Single-Family Residential Customer Portion of CSI-Thermal Program Handbook per Decision 10-01-022.  Protest are due April 12, 2010.

Last Modified: 10/8/2015

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